Não informado. (1998). American Journal of Potato Research. Potato Association of America.
Chicago (17e ed.) BronvermeldingNão informado. American Journal of Potato Research. Orono, Me: Potato Association of America, 1998.
MLA (8e ed.) BronvermeldingNão informado. American Journal of Potato Research. Potato Association of America, 1998.
Let op: Deze citaties zijn niet altijd 100% accuraat.